Antenna



FIG. 1 is a perspective view of an antenna showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view thereof showing a pipe and mounting hardware; and,

FIG. 9 is a perspective view thereof showing alternate mounting hardware.

The broken line showing of a pipe and mounting hardware in FIGS. 8 and 9 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a antenna, as shown and described. 